/*
 * Copyright 2006-2009 Sun Microsystems, Inc. All Rights Reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER
 * 
 * This code is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2
 * only, as published by the Free Software Foundation.
 * 
 * This code is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * General Public License version 2 for more details (a copy is
 * included in the LICENSE file that accompanied this code).
 * 
 * You should have received a copy of the GNU General Public License
 * version 2 along with this work; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
 * 02110-1301 USA
 * 
 * Please contact Sun Microsystems, Inc., 16 Network Circle, Menlo
 * Park, CA 94025 or visit www.sun.com if you need additional
 * information or have any questions.
 */

package com.sun.spot.peripheral.radio;

import java.util.TimerTask;

import com.sun.spot.util.Debug;

public class RetransmitTimer extends TimerTask {
    
    private byte seqNo;
    private RadiostreamProtocolManager spm;
    private ConnectionState cs;
    
    /** Creates a new instance of RetransmitTimer */
    public RetransmitTimer(byte seqNo, ConnectionState cs, RadiostreamProtocolManager spm) {
        this.cs = cs;
        this.seqNo = seqNo;
        this.spm = spm;
    }
    
    /**
     * This method is called by a timer after the retransmit timeout expires.
     * It calls the ProtocolManager's retransmit() method
     */
    public void run(){
        RetransmitBuffer rb = cs.getRetransBuffer(seqNo);
        if (rb != null) {
        	Debug.print("[Radiostream] RetransmitTimer expired for " + cs + " seq=" + (seqNo & 0xff) + " at " + System.currentTimeMillis());
            spm.retransmit(rb, cs, ConnectionState.NO_MESHLAYER_ACK);
        } else {
        	Debug.print("[Radiostream] RetransmitTimer expired for " + cs + " seq=" + (seqNo & 0xff) + " with no RetransmitBuffer at " + System.currentTimeMillis());
        }
    }
}
